Molder s flask



(No Model.) v

J. HARRISON.

MOLDERS FLASK. No. 375,935. Patented Jan. 3, 1888.

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UNITED STATE PATENT OFFICE.

JOSEPH HARRISON, OF MILWAUKEE, \VIS CONSIN.

MOLDERS FLASK.

SPECIFICATION forming part of Letters Patent No. 375,935, dated January3, 1888.

Application filed November 8, 1887. Serial No. 254,599. (No model.)

To all whom it may concern.-

Be itknown that I, Josnrrr HARRISON, of Milwaukee, in the county ofMilwaukee, and in the State of Wisconsin, have invented certain new anduseful Improvements in Molders Flasks; and I do hereby declare that thefollowing is a full, clear,and exact description thereof.

My invention relates to molders flasks; and it consists in certainpeculiarities of construction and combination of parts, to behereinafter described with reference to the accompanying drawings, andsubsequently claimed.

In the drawings, Figure 1 represents a plan view illustrating theapplication of a flask constructed according to my invention; Fig. 2, aside elevation, partly in section, ofa portion of my flask; Fig. 3, adetail view of a connecting-rod employed in my invention; Fig. 4, asimilar view ofa hook employed to remove the connecting-rods, and Fig. 5a plan view, partly in section.

Referring by letter to the drawings, A represents a series of sections,each of which has the upper and lower corner of one of its verticaledges provided with a perforated lug, B, and the upper and lower cornersof the opposite vertical edge cut away to form recesses 0. Immediatelyadjacent to the recessesC each of the sections is provided withperforated lugs D, that are joined to the lugs B by means of diagonalstrengthening-webs E, said sections being also provided with a suitablenumber of perforations, F, for the escape of the gases generated duringthe process of molding. Between the lugs B, and outside the lugs D, eachof the sections A has its edge beveled, and between the lugs D the edgeis rounded. The lugs 13 of each section are designed to fit the recessesO of the section next adjacent, and thus the per forations in said lugswill be brought into register with those in the lugs D to receive aconnecting-rod, G, wherebya hinge-joint is established between saidsections. The sections are automatically prevented from folding inwardupon one another by means of the beveled edges of one section cominginto contactwith theinner side of the next adjacent section. The pins Gare severally provided with transverse perforations II I, in which toinsert a pin, J, for engagement with the bifurcated and grooved end K ofahook,L,(shown in detail, Fig. 4,)the other end of this hook beingpreferably provided with an eye, M, whereby it may be at-' tached to asuitable tackle or lever.

In the operation of my invention any desir- 1 tions, whereby all thesections are united in one chain.

A flask being formed in the manner above described, a moldis madetherein bypacking sand around a pattern, and it will be noticed that theflask assumes a shape approximate to that of said pattern, whereby anequal amount ofthe sand is on all sides ofthis pattern. After the metalhas been run and it is desirable to remove the casting, I draw one ormore of-the rods G,and thereby break the flask apart, so as to readilyseparate the sand from said casting. From the fact that the rods G aredilfieult to remove after the sand has been packed, I provide the pins Jand hook M and operate as follows: Supposing the flask to have been madein two tiers, as shown by Fig. 2, Iplaceapin, J, in transverseperforation H ofarod, G, in the upper tier, then catch hold of said pinwith the hook L and draw the rod up far enough to bring its lower endout of the lugs by which it is engaged. The pin J is now removed fromthe perforation H in the rod and placed in the perforation Ithereofandtheoperation of drawing out continued. The rod in the lower tierimmediately below the one just drawn is removed in a similar manner, thepin 1 being alternately arranged in the perforations H I and operatedupon by the hook, as above de scribed. The operation just describedbeing accomplished,the flask is broken apart and can be readily moved.After the flask has been broken apart the remaining rods can be readilyremoved by hand, in order to disunite the several sections of which itis composed. When only one tier is used, I may make the rods G of suchlength as to project above the upper edges of the sections, so that theymay be more readily operated upon by the hook.

By my invention I provide a flask that can be readily and quickly set upfor any size'of casting, and, as before stated, will approximate inshape to the pattern,thus enabling me to make a mold with less sand andat the same time pack this sand more securely with less time and laborthan is ordinarily the case.

Another advantage of my invention lies in the fact that after thecasting has been completed there is no necessity for digging out thesand, as when the flask is broken apart said sand will fall for want ofsupport, and hence the time and labor about a foundry is greatlyeconomized. I also economize space in storing flasks made according tomy invention, as the sections composing these flasks take upcomparatively little room when nnlaced and stacked.

Having now fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. A niolders flask that comprises a series ofsections, each of whichhas one vertical edge thereof provided at its corners with perforatedlugs, and the other vertical edge cut away at the corners to formrecesses, and also provided with perforated lugs, and rods passedthrough the several lugs when those of one section are in register withthose of the sections next adjacent, substantially as set forth.

2. A molders flask that comprises a series ofsections, each of which hasone vertical edge thereof provided at its corners with perforated lugs,and the other vertical edge cut away at the corners to form recesses,and also provided with perforated lugs, diagonal strengtheningwebsuniting the lugs on the opposite edges of 40 the sections, and rodspassed through the several lugs when those of one section are inregister with those of the sections next adjacent, substantially as setforth.

3. A molders flask comprising a series of sections, each of which hasone vertical edge thereof beveled and provided at the corners withperforated lugs, and the other "ertical edge rounded and cut away toform recesses that are beveled in a vertical direction, and thislast-named vertical edge also provided with perforated lugs, and rodspassed through the several lugs when those of one section are inregister with those of the sections next adjacent, substantially as setforth.

4. A molders flask comprising a series of sections, each of which hasone vertical edge thereof provided with perforated lugs and the othervertical edge cut away to form recesses,

and also provided with perforated lugs, and rods provided withtransverse perforations, passed through the several lugs when those ofonesection are in register with those of the section next adjacent, incombination with a pin or pins that detachably engage the perforationsin the rods, substantially as set forth. In testimony that I claim theforegoing I have hereunto set my hand at Milwaukee, in the county ofMilwaukee and State of W'isconsin, in the presence 01' two witnesses.

JOSEPH HARRISON.

a W'itnesses:

N. E. OLIPHANT, GEO. XV. YOUNG.

